package com.qk.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qk.common.PageResult;
import com.qk.dto.UserDto;
import com.qk.entity.User;
import com.qk.exception.BusinessException;
import com.qk.mapper.UserMapper;
import com.qk.service.UserService;
import com.qk.utils.JwtUtils;
import com.qk.vo.LoginResultVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Slf4j
@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Override
    public PageResult list(UserDto userDto) {
        // 1.设置分页参数
        PageHelper.startPage(userDto.getPage(), userDto.getPageSize());

        // 2.调用mapper接口方法
        List<User> userList =userMapper.selectList(userDto);

        // 3.封装并返回分页结果
        Page<User> p = (Page<User>) userList;
        return new PageResult<>(p.getTotal(), p.getResult());

    }

    @Override
    public void add(User user) {
        user.setCreateTime(LocalDateTime.now());
        user.setUpdateTime(LocalDateTime.now());
        // 加密密码
        String password =user.getUsername() + "123";
        user.setPassword(DigestUtils.md5DigestAsHex(password.getBytes()));
        userMapper.insert(user);
    }

    @Override
    public void deleteByIds(List<Integer> ids) {
        userMapper.deleteByIds(ids);
    }

    @Override
    public User findById(Integer id) {
        return userMapper.selectById(id);
    }

    @Override
    public void update(User user) {
        user.setUpdateTime(LocalDateTime.now());
        String newPassword = user.getUsername() + "123";
        user.setPassword(DigestUtils.md5DigestAsHex(newPassword.getBytes()));
        userMapper.update(user);
    }

    @Override
    public List<User> allUsers() {
        return userMapper.allUsers();
    }

    @Override
    public List<User> getRoleLabel(String roleLabel) {
        return userMapper.selectRoleLabel(roleLabel);
    }

    @Override
    public List<User> getDeptId(Integer deptId) {
        return userMapper.selectDeptId(deptId);
    }

    @Override
    public LoginResultVo login(User user) {
        // 1.调用mapper接口方法
        User u = userMapper.selectByUsername(user.getUsername());
        // 2.判断用户是否存在
        if (u == null) {
            log.info("用户不存在");
            throw new BusinessException("用户名或密码错误");
        }

        // 3.判断用户密码是否正确
        String _pass = DigestUtils.md5DigestAsHex(user.getPassword().getBytes());
        if(!_pass.equals(u.getPassword())){
            log.info("用户密码错误");
            throw new BusinessException("用户名或密码错误");
        }

        // 4.判断用户状态是否正确
        if(u.getStatus() == 0){
            log.info("用户已停用");
            throw new BusinessException("用户已停用");
        }

        // 5.封装结果并返回
        LoginResultVo loginResultVo = new LoginResultVo();
        loginResultVo.setId(u.getId());
        loginResultVo.setUsername(u.getUsername());
        loginResultVo.setName(u.getName());
        loginResultVo.setImage(u.getImage());
        loginResultVo.setRoleLabel(u.getRoleLabel());

        // 调用工具类生成Jwt令牌
        Map<String,Object> claims = new HashMap<>();
        claims.put("id",u.getId());
        claims.put("username",u.getUsername());
        String jwt = JwtUtils.generateToken(claims);
        loginResultVo.setToken(jwt);

        return loginResultVo;
    }
}
